Error in block 5

[dewodewo31]

Here is an error that happened when I execute the GlaucomaTest.ipynb file.
The error message has shown below.
`TypeError Traceback (most recent call last)
in ()
4 epochs = 30,
5 validation_data = test_set,
----> 6 validation_steps = 30/batch_size)

13 frames
/usr/local/lib/python3.7/dist-packages/tensorflow/python/framework/constant_op.py in convert_to_eager_tensor(value, ctx, dtype)
96 dtype = dtypes.as_dtype(dtype).as_datatype_enum
97 ctx.ensure_initialized()
---> 98 return ops.EagerTensor(value, ctx.device_name, dtype)
99
100

TypeError: Cannot convert 0.9375 to EagerTensor of dtype int64`

how can i fix those error thanks a lot